| PCL | Printer Command Language |
| RTO | Recovery Time Objective |
| IRP | Incident Response Plan |
| MFA | Multifactor Authentication |
| NFC | Near-field Communication |
| PSU | Power Supply Unit |
| ISP | Internet Service Provider |
| MAM | Mobile Application Management |
| NTFS | New Technology File System |
| CAPTCHA | Completely Automated Public Turing Test to Tell Computers and Humans Apart |
| SAS | Serial Attached SCSI [Small Computer System Interface] |
| SQL | Structured Query Language |
| BYOD | Bring Your Own Device |
| CPU | Central Processing Unit |
| ATA | Advanced Technology Attachment |
| FAT12 | 12-bit File Allocation Table |
| DKIM | DomainKeys Identified Mail |
| RJ11 | Registered Jack Function 11 |
| SCADA | Supervisory Control and Data Acquisition |
| SSH | Secure Shell |
| AUP | Acceptable Use Policy |
| IEEE | Institute of Electrical and Electronics Engineers |
| CMD | Command Prompt |
| IP | Internet Protocol |
| ST | Straight Tip |
| CERT | Computer Emergency Response Team |
| EOL | End-of-Life |
| SODIMM | Small Outline Dual Inline Memory Module |
| SSO | Single Sign-on |
| TCP | Transmission Control Protocol |
| HCL | Hardware Compatibility List |
| MMC | Microsoft Management Console Acronym Definition |
| PPP | Point-to-Point Protocol |
| ADF | Automatic Document Feeder |
| IPSec | Internet Protocol Security |
| DNS | Domain Name System |
| HDD | Hard Disk Drive |
| ATX | Advanced Technology Extended |
| CMOS | Complementary Metal-Oxide Semiconductor |
| SMS | Short Message Service |
| SSID | Service Set Identifier |
| LCD | Liquid Crystal Display |
| APFS | Apple File System |
| EULA | End-User License Agreement |
| ISO | International Organization for Standardization |
| SCP | Secure Copy Protection |
| TACACS | Terminal Access Controller Access-Control System |
| ARM | Advanced RISC [Reduced Instruction Set Computer] Machine |
| IPS | In-plane Switching |
| exFAT | Extensible File Allocation Table |
| ext | Extended File System |
| MOU | Memorandum of Understanding |
| CD | Compact Disc |
| DoS | Denial of Service |
| DSL | Digital Subscriber Line |
| HDCP | High-bandwidth Digital Content Protection |
| IrDA | Infrared Data Association |
| MSDS | Material Safety Data Sheet |
| APIPA | Automatic Private Internet Protocol Addressing |
| OCR | Optical Character Recognition |
| PXE | Preboot Execution Environment |
| BSOD | Blue Screen of Death |
| MDM | Mobile Device Management |
| RJ45 | Registered Jack Function 45 |
| KB | Knowledge Base |
| IDS | Intrusion Detection System |
| RF | Radio Frequency |
| ACL | Access Control List |
| MAC | Media Access Control/Mandatory Access Control |
| NFS | Network File System |
| SNMP | Simple Network Management Protocol |
| GSM | Global System for Mobile Communications |
| APK | Android Package |
| DC | Direct Current |
| DIMM | Dual Inline Memory Module |
| DRM | Digital Rights Management |
| ONT | Optical Network Terminal |
| FAT16 | 16-bit File Allocation Table |
| RDP | Remote Desktop Protocol |
| IR | Infrared |
| GPT | GUID [Globally Unique Identifier] Partition Table |
| NVMe | Non-volatile Memory Express |
| SSD | Solid-State Drive |
| LC | Lucent Connector |
| KVM | Keyboard-Video-Mouse |
| DDR | Double Data Rate |
| ITX | Information Technology eXtended |
| SFTP | Secure File Transfer Protocol |
| CDFS | Compact Disc File System |
| HAL | Hardware Abstraction Layer |
| IOPS | Input/Output Operations Per Second |
| HTML | Hypertext Markup Language |
| LED | Light-emitting Diode |
| MSRA | Microsoft Remote Assistance |
| PAN | Personal Area Network |
| SOHO | Small Office/Home Office |
| FAT | File Allocation Table |
| RADIUS | Remote Authentication Dial-in User Service |
| CDMA | Code-Division Multiple Access |
| HSM | Hardware Security Module |
| SIMM | Single Inline Memory Module |
| DMARC | Domain-based Message Authentication, Reporting, and Conformance |
| GPS | Global Positioning System |
| PCIe | Peripheral Component Interconnect Express |
| SMTP | Simple Mail Transfer Protocol |
| ECC | Error Correcting Code |
| PE | Preinstallation Environment |
| POST | Power-on Self-Test |
| SNTP | Simple Network Time Protocol |
| DMA | Direct Memory Access |
| DRAM | Dynamic Random-Access Memory |
| PaaS | Platform as a Service |
| NetBIOS | Networked Basic Input/Output System |
| RMM | Remote Monitoring and Management |
| FTP | File Transfer Protocol |
| EFS | Encrypting File System |
| TCP/IP | Transmission Control Protocol/Internet |
| SAN | Storage Area Network |
| HDMI | High-Definition Multimedia Interface |
| SIM | Subscriber Identity Module |
| IoT | Internet of Things |
| MX | Mail Exchange |
| PRL | Preferred Roaming List |
| OS | Operating System |
| S.M.A.R.T. | Self-monitoring Analysis and Reporting Technology |
| DDoS | Distributed Denial of Service |
| eSATA | External Serial Advanced Technology Attachment |
| PoE | Power over Ethernet |
| SaaS | Software as a Service |
| GUI | Graphical User Interface |
| DVI-D | Digital Visual Interface-Digital |
| EMI | Electromagnetic Interference |
| HTTP | Hypertext Transfer Protocol |
| RAID | Redundant Array of Independent (or Inexpensive) Disks |
| ARP | Address Resolution Protocol |
| RFID | Radio Frequency Identification |
| MAN | Metropolitan Area Network |
| MFP | Multifunction Printer |
| PIN | Personal Identification Number |
| HTTPS | Hypertext Transfer Protocol Secure I/O Input/Output |
| NIC | Network Interface Card |
| FAT32 | 32-bit File Allocation Table |
| MBR | Master Boot Record |
| FSB | Front-Side Bus |
| CRL | Certificate Revocation List |
| DVI | Digital Visual Interface |
| SSL | Secure Sockets Layer |
| ATM | Asynchronous Transfer Mode |
| BIOS | Basic Input/Output System |
| MFD | Multifunction Device |
| OLED | Organic Light-emitting Diode |
| IDE | Integrated Drive Electronics |
| NAT | Network Address Translation |
| HAV | Hardware-assisted Virtualization |
| ICR | Intelligent Character Recognition |
| STP | Shielded Twisted Pair |
| AC | Alternating Current |
| CIFS | Common Internet File System |
| IMAP | Internet Mail Access Protocol |
| LDAP | Lightweight Directory Access Protocol |
| PII | Personally Identifiable Information |
| AP | Access Point |
| RAM | Random-access Memory |
| RFI | Radio Frequency Interference |
| SCSI | Small Computer System Interface |
| NAC | Network Access Control |
| GFS | Grandfather-Father-Son |
| PKI | Public Key Infrastructure |
| SC | Subscriber Connector |
| SRAM | Static Random-access Memory |
| GUID | Globally Unique Identifier |
| NDA | Non-disclosure Agreement |
| POP3 | Post Office Protocol 3 |
| ESD | Electrostatic Discharge |
| LAN | Local Area Network |
| SMB | Server Message Block |
| AES | Advanced Encryption Standard |
| AAA | Authentication, Authorization, and Accounting |
| GPU | Graphics Processing Unit |
| IaaS | Infrastructure as a Service |
| PC | Personal Computer |
| SATA | Serial Advanced Technology Attachment |
| SDN | Software-defined Networking |
| DHCP | Dynamic Host Configuration Protocol |
| NetBT | NetBIOS over TCP/IP [Transmission Control Protocol/Internet Protocol] |
| SPF | Sender Policy Framework |